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Electromagnetic Field Theory

Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

 Infinity.
 Zero.
  2.16.
 4.32.

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Electromagnetic Field Theory
A conductor is rotating with in a magnetic field. At which of the positions do the peak voltages occur?

 Anywhere.
 At an angle of 45° to the axis of the magnetic field.
 At right angles to the axis of the magnetic field.
 Along the axis of the magnetic field.

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Electromagnetic Field Theory
Electric field inside a hollow metallic charged sphere is

 increasing towards centre.
 none of above.
 decreasing towards centre.
 zero.

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Electromagnetic Field Theory
Two coils are coupled in such a way that the mutual inductance between them is 20 mH. If the inductances of the coils are 40 mH and 50 mH respectively, the coefficient of coupling is

 0.477.
 0.01.
 0.447.
 0.577.

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Electromagnetic Field Theory
If the resistance of a conductor does not vary in accordance with the Ohms law it is known as

 reverse conductor.
 non - linear conductor.
 non - conductor.
 bad conductor.

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Electromagnetic Field Theory
Cork Screw rule is used to find

 direction of magnetic field.
 direction of electric field.
 direction of current.
 direction of emf.

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MORE MCQ ON Electromagnetic Field Theory

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